Round off the following number within three significant figures -4.735 × 10⁻⁶ kg
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Question

Round off the following number within three significant figures −4.735 × 10⁻⁶ kg

G1 Physics · Accepted Answer

Three significant figures are 4, 7 and 3. The next digit is 5 and the preceding digit 3 is odd, so round it upward: 4.735 → 4.74. Therefore the rounded magnitude is 4.74 × 10⁻⁶ kg. Correct answer: A.